Experimental and Numerical Investigations of Thermal Soak

Weidmann, Ernst Peter; Binner, Thomas; Reister, Heinrich

doi:10.4271/2008-01-0396

Cited by 16 publications

(2 citation statements)

References 3 publications

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“…Experimental analyses [2,3] of these phenomena are rare and studies usually focus on the temperature analysis, referring mainly to numerical simulations [4][5][6][7][8][9]. It is therefore important to obtain an experimental database on the heat fluxes exchanged.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity and applications of a new method for the simultaneous measurement of convective and radiative heat flux in underhood applications—toward multiple versions

Khaled

Shaer

Ramadan

et al. 2014

Meas. Sci. Technol.

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Convective and radiative heat fluxes enter simultaneously into most thermal engineering applications, especially in the vehicle underhood. However, separate measurements of these fluxes are needed for understanding and analyzing underhood aerothermal phenomena. In this context, a new experimental technique has been proposed (Khaled et al 2010 Meas. Sci. Technol. 21 025903) that allows the simultaneous measurement of convective and radiative heat fluxes. The technique uses a pair of fluxmeters with different radiative properties: the two fluxmeters measure the same convective flux but different radiative fluxes proportional to the fluxmeters’ emissivities. This permits the separate calculation of the convective and radiative fluxes. This paper presents a sensitivity and applicability analysis of the new technique, taking into account the effects of a number of parameters such as emissivities, the precision of emissivity estimation and the difference in convective heat fluxes due to fluxmeter position. Also, new applications of this novel technique are proposed as an alternative when the initial version becomes inaccurate.

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Section: Introductionmentioning

confidence: 99%

Sensitivity and applications of a new method for the simultaneous measurement of convective and radiative heat flux in underhood applications—toward multiple versions

Khaled

Shaer

Ramadan

et al. 2014

Meas. Sci. Technol.

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“…The result is that complex heattransfer phenomena (convection and radiation) arise in the confined underhood geometry. Experimental analyses of these phenomena are rare and studies have essentially focused on temperature analyses by numerical simulations [3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

A new method for simultaneous measurement of convective and radiative heat flux in car underhood applications

Khaled

Garnier

Harambat

et al. 2010

Meas. Sci. Technol.

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A new experimental technique is presented that allows simultaneous measurement of convective and radiative heat flux in the underhood. The goal is to devise an easily implemented and accurate experimental method for application in the vehicle underhood compartment. The new method is based on a technique for heat-flux measurement developed by the authors (Heat flow (flux) sensors for measurement of convection, conduction and radiation heat flow 27036-2, © Rhopoint Components Ltd, Hurst Green, Oxted, RH8 9AX, UK) that uses several thermocouples in the thickness of a thermal resistive layer (foil heat-flux sensor). The method proposed here uses a pair of these thermocouples with different radiative properties. Measurements validating this novel technique are carried out on a flat plate with a prescribed constant temperature in both natural-and forced-convection flow regimes. The test flat plate is instrumented by this new technique, and also with a different technique that is intrusive but very accurate, used as reference here (Bardon J P and Jarny Y 1994 Procédé et dispositif de mesure transitoire de température et flux surfacique Brevet n • 94. 011996, 22 February). Discrepancies between the measurements by the two techniques are less than 10% for both convective and radiative heat flux. Error identification and sensitivity analysis of the new method are also presented.

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Analysis and modeling of the thermal soak phase of a vehicle — Temperature and heat flux measurements

Khaled

El-Rab²,

Habchi

et al. 2015

Int.J Automot. Technol.

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Experimental and Numerical Investigations of Thermal Soak

Cited by 16 publications

References 3 publications

Sensitivity and applications of a new method for the simultaneous measurement of convective and radiative heat flux in underhood applications—toward multiple versions

Sensitivity and applications of a new method for the simultaneous measurement of convective and radiative heat flux in underhood applications—toward multiple versions

A new method for simultaneous measurement of convective and radiative heat flux in car underhood applications

Analysis and modeling of the thermal soak phase of a vehicle — Temperature and heat flux measurements

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